=IFERROR(VLOOKUP(B2,'Site Assignments'!$A$1:$D$131,4,FALSE),"ASK JON FOR INFO")

Now I want to add logic that says if cells F2 and I2 are blank, then leave L2 blank

I think what I need to add to the formula above is the following logic:

IF(AND(ISBLANK(F2), ISBLANK (I2),"",

So I came up with this formula:

=IF(AND(ISBLANK(F2), ISBLANK (I2),""),IFERROR(VLOOKUP(B2,'Site Assignments'!$A$1:$D$131,4,FALSE),"ASK JON FOR INFO"))

But that formula is returning #NAME ?

I suspect that by adding ISBLANK that might be triggering the error, but I am not sure

What am I doing incorrectly?